Corn-planter



(No Model.) 2 sheets-811888A 2. G.` D. HAWORTH. CORN PLANTBR.

No. 880,888. Patented Apr. 10, `1888.

Fig. 3-

ATT-55T INVENTOR 8 a? GEO. D. HAM/@FJH UNITED STATES PATENT OE'ETCE.

GEORGE HAWORTH, OF DECATUR, ILLINOIS.

CORN-PLANTER.

SPECIFICATION forming part of Letters Patent No. 380,889. dated April 10, 1888.

Application tiled September 24. 1887. Serial No. 250,557'. (No modell To @ZZ whom, it may concern,.-

Be it known that I, GEORGE D. HAwoRTH, of the city of Decatur, county of Macon, and State of Illinois, have invented certain new and useful Improvements in Corn-Planters, of which the following is a specification.

My invention relates to the dropping mechanism of corn-planters, and comprises a device for preventing the corn from packing on the seed-plates and mechanism to impart to the Seedplates the customary intermittent rotation.

In the drawings accompanying and forming a part of this specification, Figure 1 is a plan of a seed-plate and actuating mechanism constructed in accordance with my invention. Fig. 2 is a side view of the mechanism shown in Fig. l. Fig. 3 is a side view ofa seed-box having a side broken to expose the device used to prevent the corn from packing. Fig. 4 is a side view ofthe mechanism shown in Fig. 1 on a line at right angles with the line of observation in Fig. 2; and Fig. 5 is a side view of the rocking arm on dotted line :r in Fig. 4,

with the shakebar in position thereon.

The seed-plate a occupies a horizontal positionvand has peripheral ratchet-teeth c. Extended diametrically under the seedplate is rock-bar g, and pivoted on the rock-bar at opposite sides of the .plate are the peculiarlyconstructed pawls h.

Teeth Z and k of the pawls h are designed to impart motion to the seed-plate. Stop projection m is designed to arrest motion, and beveled catch n is designed to draw the pawl in contact with the ratchet-teeth when an operative stroke is terminated. The undercut ratchet-recesses p form points of impingement for stop projections m, and the faces of said recesses are presented in a direction opposed to the faces of teeth c. Pins 'i form pivots for the pawls, and inwardly-projecting weights o tend to hold the pawls to their work. The under plate, g, corresponds to plates commonly used in this connection, the dischargehole being indicated at b in Fig. 1. The lips u on plate g, adjacent to the pawls, co-operate with catches n to draw the pawls in mesh with the ratchet preparatory to an operative throw in case the weights o fail to do their duty. The pawls co-operate while acting reversely. They alternately propel the ratchetplate,'and while tooth, and is firmly locked by the pressure of a tappet, 7a, iu one direction and the resistance of a stop projection, m, in a contrary direction. rlhe seed-cells b correspond in number tothe ratchet-teeth, so that each motion ofthe rock-bar effects a discharge of corn.

On an end of bar g is an oscillating arm, d, which is provided with the convex surface e concentric with the pivot of the bar, and also provided with teeth f f. The shake-bar r rests on the convex surface e, as shown in Fig. 5, with its lateral teeth y y y in mesh with the teeth of the arm. Downward projection x is formed on the under surface of the shake-bar in position to stand over the center of the arm when the arm is in a vertical position. As the arm moves past the vertical the weight of the shake-bar, imparted entirely through projection x, moves with it, constantly accelerating the motion as the distance beyond the vertical center is increased and assuring a completion of the operative throw of the shakebar.

In Fig. 3, s represents a plate pivoted at its lower end and resting ordinarily in a position approximating thatV indicated by the solid lines. A space between the pivot end of the plate and the side of the box next adjacent is made to permit the passage of corn in quantities sufficient to supply the seed-plate, and the plate is sufciently elevated above the seed-plate to permit the corn to be thoroughly distributed. such that the corn will slide down the same, and by its use the greater part of the weight of the corn will be taken off the seed-plates, and packing be consequently avoided. When it becomes necessary to manipulate the seedplate for any reason,the plate e maybe swung on its pivot tothe positionindicated by dotted lines.

It has not been thought necessary to show` The inclination of the plate s is i IOO junction with the shank or in the upper portion of the shank in any well-known manner. Segment of pinion, z, suggests a way to impart motion to the second drop-valve, and other means will be readily apparent to makers of corn-planters.

Having thus described my invention, I claim as new and desire to secure by Letters Paten t- 1. In seed-dropping mechanism, in combination, a seed-plate having peripheral teeth and a drivepawl pivoted to move tangentially and radially with relation to the seed-platein operative contact therewith, as and for the purpese set forth.

2. In seed-dropping mechanism, in combination, a seed-plate having peripheral teeth, a rock-bar traversing the plate diametrically, and pawls on the ends of the rock-bar adapted to swing to and from the plate and rest in Operative contact therewith with the plate, as and for the purpose set forth.

3. In seed-dropping mechanism, in combination, a seed-plate having peripheral ratchetteeth and undercut ratchet-recesses, a rockbar traversing the plate diametrically, and pawls on the ends of the bar in operative contact with the plate, carrying each a stop projection adapted to the recesses of the plate, as and for the purpose set forth.

4. In seed-dropping mechanism, in combination, the seed-plate having peripheral ratchet-teeth and undercut recesses with their faces opposed t0 the faces of the teeth, a stationary subjacent plate having lips or guide-inclines at the periphery of the ratchetplate adjacent to the pawls, a rock-har traversing the plates diametrically, and pawls on the ends of the rock-bar,having propelling-teeth, locking projections, and cams or catches adapted to bear against the lips of the stationary plate and draw the pawls in contact with the ratchetteeth, as and for the purpose set forth.

5. In seed-dropping mechanism, in combination, a rocking lever adapted to swing over its center and having an arc-bearing and peripheral teeth, a shake-bar resting on t-he are and having teeth in mesh with the teeth ofthe lever, and a boss or block interposed between the arc and the bar at the center of their operative contact, as and for the purpose set forth.

. GEO. D. HAWOETH.

Att-est:

THEO. NELSON, GEO. S. SIMPSON. 

